WO2019235220A1 - Système d'accumulation d'électricité de pilotage autonome, unité d'accumulation d'électricité et procédé de commande - Google Patents

Système d'accumulation d'électricité de pilotage autonome, unité d'accumulation d'électricité et procédé de commande Download PDF

Info

Publication number
WO2019235220A1
WO2019235220A1 PCT/JP2019/020269 JP2019020269W WO2019235220A1 WO 2019235220 A1 WO2019235220 A1 WO 2019235220A1 JP 2019020269 W JP2019020269 W JP 2019020269W WO 2019235220 A1 WO2019235220 A1 WO 2019235220A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
power storage
storage unit
unit
output terminal
Prior art date
Application number
PCT/JP2019/020269
Other languages
English (en)
Japanese (ja)
Inventor
哲男 秋田
綾井　直樹
Original Assignee
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友電気工業株式会社 filed Critical 住友電気工業株式会社
Priority to JP2020523612A priority Critical patent/JP7248023B2/ja
Publication of WO2019235220A1 publication Critical patent/WO2019235220A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This disclosure relates to a power storage system for self-sustained operation, a power storage unit, and a control method.
  • This application claims priority based on Japanese Patent Application No. 2018-108309 filed on June 6, 2018, and incorporates all the description content described in the above Japanese application.
  • An electric storage system that is connected to an electric power system and can supply electric power once stored in a storage battery to a load via a power conversion device in the event of a power failure or the like is known.
  • a power storage system that is also connected to a solar power generation system and stores generated power (surplus power) exceeding the power supplied to the load is also known.
  • Patent Document 1 described later discloses a technology that can easily increase the capacity of a backup power supply system after installation in an existing photovoltaic power generation system.
  • a power conditioner (hereinafter referred to as a PCS (Power Conditioning System)) of power storage unit 900 is connected to a specific outlet 906.
  • the PCS of the power storage unit 900 converts the power stored in the power storage unit 900 and the extension unit 902 from direct current to alternating current and supplies it to the specific outlet 906 according to the setting by the remote controller 904. .
  • power is supplied to the device connected to the specific outlet 906 even during a power failure.
  • the storage capacity increases. Therefore, a request for a relatively small capacity can be handled by the power storage unit 900 alone, and if the required capacity is larger, it can be handled by adding the extension unit 902.
  • An energy storage system for autonomous operation includes a plurality of energy storage units and a control unit, and each energy storage unit of the plurality of energy storage units includes a storage battery, a power input terminal, and a power output terminal.
  • a switch that opens or short-circuits the input terminal and the output terminal, and controls charging / discharging of the switch and the storage battery according to an instruction from the control unit, and the plurality of power storage units are each power storage unit of the plurality of power storage units Are connected to the output terminal of one of the plurality of power storage units, so that the plurality of power storage units are connected in series as a whole.
  • the control unit In a plurality of power storage units connected in series, input terminals that are not connected to the output terminals of any power storage unit In the plurality of power storage units connected in series, connected to the self-sustained output terminal of the power generator that outputs the generated power from the self-supporting output terminal, the output terminal that is not connected to the input terminal of any power storage unit is Connected to a specific load to which power is to be supplied at the time of a power failure, the control unit generates an instruction for each power storage unit of the plurality of power storage units in response to the power system being in a power failure state.
  • a power storage unit is a power storage unit that includes a storage battery and controls charging / discharging of the storage battery according to an instruction from a control unit shared with another power storage unit, the power input terminal, And an output terminal and a switch for opening or shorting the input terminal and the output terminal, the power storage unit is connected in series with another power storage unit via at least one of the input terminal and the output terminal, and the switch is controlled The unit opens or shorts the input terminal and the output terminal in response to an instruction output in response to the power system being in a power failure state.
  • a control method includes a plurality of power storage units, and each power storage unit of the plurality of power storage units includes a storage battery, a power input terminal, a power output terminal, the input terminal, and the power storage unit.
  • a plurality of power storage units, each of the plurality of power storage units is a power storage unit different from each power storage unit.
  • a plurality of power storage units are connected in series by being connected to the output terminal of one of the power storage units, and the plurality of power storage units connected in series are connected to the output terminal of any power storage unit.
  • the input terminal that is not connected is connected to the self-sustained output terminal of the generator that outputs power from the self-sustained output terminal by performing self-sustained operation when the power system fails.
  • the output terminal that is not connected to the input terminal of any power storage unit is a control method for a system that is connected to a specific load to which power is to be supplied in the event of a power failure,
  • FIG. 1 is a block diagram showing a configuration of a conventional power storage system for independent operation.
  • FIG. 2 is a block diagram illustrating a configuration of a self-sustaining operation power storage system including a plurality of power storage units of the same product in parallel.
  • FIG. 3 is a block diagram illustrating a configuration of the self-sustaining operation power storage system according to the embodiment of the present disclosure.
  • FIG. 4 is a flowchart showing the operation of the remote controller of FIG.
  • FIG. 5 is a flowchart showing the operation of the power storage unit of FIG.
  • FIG. 6 is a flowchart showing the operation of the extension unit of FIG.
  • FIG. 7 is a flowchart showing the operation of the power generation apparatus of FIG. FIG.
  • FIG. 8 is a block diagram illustrating a state of the power storage unit and the extension unit of FIG. 3 at the time of a power failure.
  • FIG. 9 is a block diagram showing a state different from that in FIG. 8 when the power storage unit and the extension unit in FIG.
  • FIG. 10 is a block diagram showing a state different from those in FIGS. 8 and 9 when the power storage unit and the extension unit in FIG.
  • FIG. 11 is a block diagram showing a state different from that shown in FIGS. 8 to 10 when the power storage unit and the extension unit of FIG.
  • FIG. 12 is a block diagram showing a state different from that shown in FIGS. 8 to 11 when the power storage unit and the extension unit in FIG. 3 are in a power failure.
  • FIG. 13 is a flowchart showing the operation of the remote controller in the second modification.
  • FIG. 14 is a block diagram illustrating a configuration of a self-sustaining operation power storage system according to a third modification.
  • the extension unit 902 has a different configuration from the power storage unit 900, and thus it is necessary to manage the power storage unit 900 and the extension unit 902 with different product numbers. Further, it is necessary to adjust the number of manufactured power storage units 900 and the number of manufactured extension units 902, which is complicated.
  • the present disclosure provides a power storage system for self-sustained operation, a power storage unit, and a control method thereof that include a plurality of power storage units and can efficiently supply power to a specific load when a power failure occurs in the power system. For the purpose.
  • a power storage system for self-sustained operation includes a plurality of power storage units and a control unit, and each power storage unit of the plurality of power storage units includes a storage battery, a power input terminal, An output terminal, and the input terminal and a switch that opens or short-circuits the output terminal, and controls charging and discharging of the switch and the storage battery according to an instruction from the control unit.
  • an input terminal that is not connected to the output terminal of any power storage unit
  • the output terminal that is connected to the self-sustained output terminal of the power generator that outputs the generated power from the self-sustained output terminal and is connected to the input terminal of any of the power storage units. Is connected to a specific load to which power is to be supplied in the event of a power failure, and the control unit generates an instruction for each power storage unit of the plurality of power storage units in response to the power system being in a power failure state.
  • FIG. 2 shows a single line.
  • the remote controller 914 controls the PCS of the power storage unit 910 so that the generated power is supplied to the first specific load 922 if the power generation device 920 is generating power.
  • the remote controller 914 charges the storage battery in the power storage unit 910 with the surplus power.
  • the PCS of the power storage unit 910 is controlled.
  • the remote control 914 supplies the insufficient power from the storage battery inside the storage unit 910. Control the PCS. If the power generation device 920 is not generating power, the remote controller 914 controls the PCS of the power storage unit 910 so that power is supplied from the storage battery inside the power storage unit 910 to the first specific load 922.
  • the remote controller 916 operates in the same manner as the remote controller 914. That is, when a power failure occurs, the remote controller 916 controls the PCS of the extension unit 912 so that the generated power is supplied to the second specific load 924 if the power generation device 920 is generating power. When the power supplied from the second independent output terminal 928 exceeds the power consumption of the second specific load 924, the remote controller 916 sets the PCS of the expansion unit 912 so that the storage battery inside the expansion unit 912 is charged with surplus power. Control. When the power supplied from the second independent output terminal 928 is smaller than the power consumption of the second specific load 924, the remote controller 916 supplies the insufficient power from the storage battery inside the expansion unit 912. Control the PCS. If the power generation device 920 is not generating power, the remote controller 916 controls the PCS of the extension unit 912 so that power is supplied from the storage battery inside the extension unit 912 to the second specific load 924.
  • FIG. 2 is a redundant system in which two independent power generation outputs are required and a total of two remote controllers are required to control each of the power storage unit 910 and the extension unit 912.
  • an abnormality occurs, it is necessary to operate the two remote controllers, which is complicated.
  • a plurality of power storage units and power generators Electric power can be efficiently supplied from either one to a specific load.
  • a plurality of power storage units are connected in series, power can be supplied to a specific load for a longer time than when connected in parallel.
  • a control part produces
  • the electric power source supplied to a specific load can be appropriately determined from among a plurality of power storage units and power generators.
  • the sensor further includes a sensor that detects a current supplied to the specific load, and the control unit is configured according to the power consumption of the specific load obtained from the detection value of the sensor and the output power of the independent output terminal. An instruction for each power storage unit of the plurality of power storage units is generated. Thereby, the electric power source supplied to a specific load can be determined more appropriately from a plurality of power storage units and power generators.
  • control unit generates an instruction for the power storage unit according to the power storage amount of the storage battery of the power storage unit.
  • control unit is included in any one of the plurality of power storage units, and the control unit is wired or wirelessly connected to each of the plurality of power storage units excluding the power storage unit including the control unit.
  • the control unit includes a communication unit that communicates with each other, and the control unit transmits an instruction to each of the plurality of power storage units excluding the power storage unit including the control unit via the communication unit.
  • control unit may charge and discharge the storage battery of the power storage unit connected to the specific load among the plurality of power storage units connected in series first. Generate instructions for.
  • control unit is configured to charge and discharge the storage battery of the power storage unit connected at a position closer to the specific load more preferentially.
  • indication with respect to each electrical storage unit is produced
  • the control unit turns off the switch of the power storage unit that supplies power to the specific load in response to the amount of power supplied from the independent output terminal being less than a predetermined value.
  • the power supply from the self-sustained output terminal to the storage battery is stopped, and an instruction for each power storage unit of the plurality of power storage units is generated so as to turn on the switch of the power storage unit located on the specific load side of the power storage unit.
  • the power storage unit receives a request transmitted from the control unit when the power system is in a power failure state, and transmits the power storage amount of the storage battery of the power storage unit to the control unit.
  • the self-sustaining operation power storage system further includes a remote controller, and the control unit is included in the remote controller.
  • the self-sustaining operation power storage system includes a sensor that detects power supplied from the power system, and a determination unit that determines whether or not the power system is in a power failure state according to a detection value of the sensor. And further including.
  • control unit includes a receiving unit that receives a signal indicating that the power system is in a power failure state from an external device.
  • the self-sustained operation power storage system further includes a switching unit that disconnects the specific load from the power system and connects the plurality of power storage units connected in series in response to the power system being in a power failure state. Including.
  • a power storage unit is a power storage unit that includes a storage battery and controls charging / discharging of the storage battery according to an instruction from a control unit that is shared with another power storage unit. And a switch that opens or short-circuits the input terminal and the output terminal, and the power storage unit is connected in series with another power storage unit via at least one of the input terminal and the output terminal.
  • an input terminal that is not connected to any output terminal of the power storage unit performs a self-sustained operation during a power failure of the power system and outputs generated power from the self-supporting output terminal
  • the switch is connected to the self-sustained output terminal of the power generator, and the control unit outputs in response to the fact that the output power of the self-sustained output terminal of the power generator is in the disappearing state. Responsive to the instruction to open or short the input and output terminals.
  • the storage battery is connected to an electric circuit that short-circuits the input terminal and the output terminal when the switch is turned on.
  • One end of the switch is connected to the storage battery, and the other end of the switch is connected to the input terminal. Has been.
  • a control method includes a plurality of power storage units, and each power storage unit of the plurality of power storage units includes a storage battery, a power input terminal, a power output terminal, and the input A plurality of power storage units, a power storage unit separate from each power storage unit, and a plurality of power storage units.
  • a plurality of power storage units are connected in series by being connected to the output terminal of one power storage unit of the power storage units, and in any of the plurality of power storage units connected in series, the output terminal of any of the power storage units
  • the input terminal that is not connected to the power generator is a self-sustained output terminal of a power generator that performs self-sustained operation during a power failure and outputs the generated power from the self-sustained output terminal.
  • an output terminal that is not connected to an input terminal of any power storage unit is a system control method that is connected to a specific load to which power is to be supplied in the event of a power failure.
  • control step includes a step of first charging / discharging a storage battery of the storage unit connected to the specific load among the plurality of storage units.
  • the control step outputs electric power from the independent output terminal by the independent output determination step.
  • the plurality of power storage units are controlled by the surplus power of the power generation device while controlling each switch of the plurality of power storage units so that the power output from the independent output terminal is supplied to the specific load. Charging the storage battery of each of the units, and the charging rate of each storage battery of the plurality of power storage units is controlled so that the state of each storage battery of the plurality of power storage units is equal.
  • control step is connected to the self-supporting output terminal among the plurality of power storage units upon receiving the determination that the power is not output from the self-supporting output terminal by the self-supporting output determination step.
  • the first switch that is the switch of the storage unit that is open, and among the plurality of storage units, power is supplied to the specific load from the storage battery of the storage unit that is connected in series at a position closer to the power generation device, A first step of controlling each switch of the plurality of power storage units other than the first switch is included.
  • control step further includes a storage amount determination step of determining whether or not the storage amount of the storage battery of the storage unit that has output power to the specific load has become zero after the first step.
  • the control step is a second switch that is a switch of the power storage unit when the power storage amount determination step determines that the power storage amount of the storage battery of the power storage unit that has output power to the specific load has become zero.
  • a plurality of switches other than the first switch and the second switch so that power is supplied to the specific load from the storage battery of the power storage units connected in series at a position closer to the specific load than the power storage unit.
  • a second step of controlling each switch of the power storage units is a second switch that is a switch of the power storage unit when the power storage amount determination step determines that the power storage amount of the storage battery of the power storage unit that has output power to the specific load has become zero.
  • a power storage system 100 for autonomous operation includes a power storage unit 102, an extension unit 104, a remote controller 106, a switching unit 108, a first sensor 110, and a second sensor. 132.
  • the power storage unit 102 is connected to the self-supporting output terminal 122 of the power generation device 120.
  • the extension unit 104 is connected to the power storage unit 102 in series.
  • the remote control 106 includes a communication unit 107.
  • the remote controller 106 communicates with the power storage unit 102 and the extension unit 104 via a communication unit 107 by wire or wireless.
  • the switching unit 108 is connected to the extension unit 104.
  • the first sensor 110 measures the power supplied to the specific load 124.
  • the second sensor 132 detects power supply from the power system 130.
  • the specific load 124 is supplied with power not only when a power failure has occurred in the power system 130 (hereinafter also referred to as normal time) but also when a power failure has occurred (hereinafter also referred to as power failure).
  • the general load 134 is a load that is supplied with power during normal operation but is not supplied with power during a power failure.
  • FIG. 3 shows a single line.
  • the power generation device 120 is connected to a distribution line for supplying power from the power system 130 to the general load 134, and can normally supply the generated power to the general load 134.
  • the power generation device 120 opens a connection to a distribution line for supplying power to the second sensor 132, starts a self-sustaining operation, and supplies power from the self-sustaining output terminal 122.
  • the second sensor 132 is, for example, a voltage sensor that detects a voltage supplied from the power system 130, and the power generation device 120 can determine whether or not a power failure has occurred based on the detection value of the second sensor 132.
  • the power generation device 120 transmits information representing the amount of power supplied from the self-sustained output terminal 122 (hereinafter also referred to as self-sustained output information) to the remote control 106.
  • the power generation device 120 is a solar power generation system including a solar panel and a PCS.
  • the PCS of the power generation device 120 includes a control unit (CPU, microcomputer, etc.), a storage unit (for example, a rewritable nonvolatile memory), and a communication unit, and communicates with the communication unit of the remote controller 106.
  • the power storage unit 102 and the extension unit 104 each include a PCS and a storage battery (such as a lithium ion secondary battery). Each of the power storage unit 102 and the extension unit 104 converts externally supplied power (AC) from AC to DC via the PCS and stores it in an internal storage battery.
  • Each PCS of the power storage unit 102 and the extension unit 104 includes a control unit (CPU, microcomputer, etc.), a storage unit (for example, a rewritable nonvolatile memory), and a communication unit.
  • Each PCS communicates with the communication unit 107 of the remote control 106 via its own communication unit, and receives instructions such as operation / stop. Each PCS performs a charge / discharge operation in response to an instruction from the remote controller 106.
  • the power storage unit 102 and the extension unit 104 have the same configuration, and the capacity of the storage battery is also the same. That is, the power storage unit 102 and the extension unit 104 are provided to the market as the same product.
  • the power storage unit 102 and the extension unit 104 include a first bypass switch 112 and a second bypass switch 114, respectively.
  • the first bypass switch 112 of the power storage unit 102 has one end (the input end of the power storage unit 102) connected to the self-supporting output terminal 122 and the other end (the output end of the power storage unit 102) connected to the PCS. That is, the first bypass switch 112 is disposed closer to the input terminal of the power storage unit 102 than the PCS and the storage battery.
  • the second bypass switch 114 of the extension unit 104 has one end (input end of the extension unit 104) connected to the output end of the power storage unit 102 and the other end (output end of the extension unit 104) connected to the PCS. That is, the second bypass switch 114 is disposed closer to the input terminal of the extension unit 104 than the PCS and the storage battery.
  • one input terminal 140 is connected to the output terminal of the extension unit 104, the other input terminal 142 is connected to a distribution line for supplying power from the power system 130, and the output terminal 144 is specified. Connected to a load 124.
  • the switching unit 108 is controlled by the remote controller 106, and normally connects the other input terminal 142 and the output terminal 144, and connects one input terminal 140 and the output terminal 144 at the time of power failure of the power system 130. As a result, the power supply source to be supplied to the specific load 124 is changed between the normal time and the power failure of the power system 130.
  • the remote controller 106 includes a control unit (CPU, microcomputer, etc.), a storage unit (for example, a rewritable nonvolatile memory), and a communication unit.
  • the remote controller 106 communicates with the power storage unit 102 and the extension unit 104 and stores the received information in the storage unit as appropriate.
  • the remote controller 106 can obtain the amount of power supplied to the specific load 124 by receiving the detection value of the first sensor 110.
  • the first sensor 110 is, for example, a current sensor, detects a current (alternating current) flowing through the distribution line at a position where the first sensor 110 is installed, and outputs corresponding information (such as a current value).
  • the remote control 106 can determine whether or not a power failure has occurred in the power system 130 by receiving the detection value of the second sensor 132.
  • the remote controller 106 detects that a power failure has occurred, the remote controller 106 controls the switching unit 108 to switch the connection as described above, and according to the self-sustained output information acquired from the power generation device 120, the power storage unit 102 and the extension unit 104. Control each PCS.
  • remote controller 106 is executed by the remote controller 106. Specifically, the control unit of remote controller 106 reads and executes a predetermined program from the storage unit inside remote controller 106.
  • step 200 the remote controller 106 measures the power consumption of the specific load 124. Specifically, the remote controller 106 obtains the power supplied to the specific load 124 from the information (current value) input from the first sensor 110 and stores it in the internal storage unit. As will be described later, since step 200 is repeated, the latest power value may be stored. Control then proceeds to step 202.
  • the remote controller 106 determines whether or not a power failure has occurred in the power system 130. Specifically, the remote controller 106 determines whether or not a power failure occurs based on information (voltage value) from the second sensor 132. For example, if the voltage is equal to or less than a predetermined value (value close to zero), it can be determined that a power failure occurs. If it is determined that there is a power failure, the control proceeds to step 204. Otherwise, control returns to step 200.
  • step 204 the remote controller 106 sets the switching unit 108 at the time of a power failure as described above (the input terminal 140 and the output terminal 144 are connected), and stores the storage battery charge in the extension unit 104 (hereinafter referred to as SOC (State Of Charge). )) Is transmitted to the extension unit 104.
  • SOC State Of Charge
  • the request code (hereinafter also referred to as SOC request code) is transmitted to the extension unit 104.
  • Step 206 the remote controller 106 determines whether or not the SOC requested to the extension unit 104 in Step 204 and the information on the self-sustained output power of the power generation device 120 have been acquired.
  • the information on the self-sustained output power is the self-sustained output information (the amount of power supplied from the self-sustained output terminal 122) transmitted from the power generation device 120 to the remote controller 106 when a power failure occurs. If it is determined that both have been acquired, the remote control 106 stores the acquired SOC and independent output information in the storage unit, and the control proceeds to step 208. Otherwise, step 206 is repeated. As will be described later, since step 206 is repeated, it is only necessary that the latest values of the SOC and the independent output information are stored.
  • the remote controller 106 outputs an instruction to the extension unit 104 so as to bypass the input power and stop the PCS.
  • the instruction may include, for example, a set of bypass parameters (bypass switch ON / OFF) and charge / discharge parameters.
  • bypass parameter for example, “1” indicates an instruction for bypass output, that is, an instruction to turn on (short-circuit) the bypass switch in the unit, and “0” indicates an instruction for no bypass output, that is, an instruction for bypassing the unit. Indicates an instruction to turn off.
  • the charge / discharge parameter for example, “ ⁇ 1” indicates a charge instruction, “1” indicates a discharge instruction, and “0” indicates a stop (no charge / discharge) instruction.
  • the remote controller 106 sends the data (1, 0) (bypass parameter is “1” (bypass output)) and the charge / discharge parameter is “0” (PCS). An instruction including stop)) may be transmitted. Control then proceeds to step 212.
  • step 212 the remote controller 106 determines whether or not the self-supporting output power acquired in step 206 is equal to or higher than the power of the specific load 124 measured in step 200. If it is determined that the self-sustained output power is greater than or equal to the specific load power, control proceeds to step 214. Otherwise, control passes to step 216.
  • step 214 the remote controller 106 outputs an instruction to the power storage unit 102 so as to bypass the power input to the power storage unit 102 and charge the power. Specifically, if the bypass parameter and the charge / discharge parameter are set as described above, remote controller 106 may transmit an instruction including data (1, ⁇ 1) to power storage unit 102. Control then proceeds to step 226.
  • the data (1, ⁇ 1) indicates that the bypass parameter is “1” (bypass output) and the charge / discharge parameter is “ ⁇ 1” (charge).
  • the remote controller 106 transmits an instruction to the power storage unit 102 so that the power input to the power storage unit 102 is not bypassed and discharged. Specifically, if the bypass parameter and the charge / discharge parameter are set as described above, remote controller 106 may transmit an instruction including (0, 1) data to power storage unit 102. The data (0, 1) indicates that the bypass parameter is “0” (no bypass output) and the charge / discharge parameter is “1” (discharge). Control then proceeds to step 226.
  • step 2108 remote control 106 bypasses the power input to power storage unit 102 and transmits an instruction to power storage unit 102 to stop the PCS. To do. Specifically, if the bypass parameter and the charge / discharge parameter are set as described above, remote controller 106 may transmit an instruction including data (1, 0) to power storage unit 102. The data of (1, 0) indicates that the bypass parameter is “1” (bypass output) and the charge / discharge parameter is “0” (PCS is stopped). Control then proceeds to step 220.
  • Step 220 the remote controller 106 determines whether or not the self-supporting output power acquired in Step 206 is equal to or higher than the power of the specific load 124 measured in Step 200. If it is determined that the self-sustained output power is greater than or equal to the specific load power, control proceeds to step 222. Otherwise control passes to step 224.
  • the remote controller 106 bypasses the power input to the extension unit 104 and transmits an instruction to the extension unit 104 so as to charge. Specifically, if the bypass parameter and the charge / discharge parameter are set as described above, the remote controller 106 may transmit an instruction including data (1, ⁇ 1) to the extension unit 104.
  • the data (1, ⁇ 1) indicates that the bypass parameter is “1” (bypass output) and the charge / discharge parameter is “ ⁇ 1” (charge). Control then proceeds to step 226.
  • the remote controller 106 transmits an instruction to the extension unit 104 so that the power input to the extension unit 104 is not bypass output and is discharged. Specifically, if the bypass parameter and the charge / discharge parameter are set as described above, the remote controller 106 may transmit an instruction including data (0, 1) to the extension unit 104. The data (0, 1) indicates that the bypass parameter is “0” (no bypass output) and the charge / discharge parameter is “1” (discharge). Control then proceeds to step 226.
  • the remote controller 106 determines whether or not to end. For example, when the power failure of the power system 130 is resolved and the supply of power from the power system 130 is started, the remote controller 106 determines that the remote control 106 is finished. When it is determined to end, the remote controller 106 changes the switching unit 108 to the normal state, and transmits a stop instruction to the power storage unit 102 and the extension unit 104. Thereafter, the program ends. Otherwise, control returns to step 200, and the processing from step 200 to step 226 is repeated until it is determined to end. Even if the program is terminated once, it is preferable that the program is started again if the power system 130 recovers from the power failure.
  • the control unit of the power storage unit 102 reads and executes a predetermined program from the storage unit inside the power storage unit 102.
  • step 300 the power storage unit 102 determines whether or not data has been received. If it is determined that it has been received, control proceeds to step 302. Otherwise, step 300 is repeated.
  • step 302 the power storage unit 102 determines whether or not the data received in step 300 includes a bypass output instruction. If it is determined that it is included, control proceeds to step 304. Otherwise control passes to step 306. If the bypass parameter is “1”, it is determined that the instruction is a bypass output, and if the bypass parameter is “0”, it is determined that the instruction is not a bypass output.
  • step 304 the power storage unit 102 turns on the first bypass switch 112. Control then proceeds to step 308.
  • step 306 the power storage unit 102 turns off the first bypass switch 112. Control then proceeds to step 308.
  • step 308 the power storage unit 102 determines which of charging, discharging, and stopping instructions has been received. If the charge / discharge parameter is “ ⁇ 1”, it is determined as a charge instruction, “1” as a discharge instruction, and “0” as a stop instruction. If it is determined that the instruction is a charge instruction, the control proceeds to step 310. If it is determined that the instruction is a discharge instruction, the control proceeds to step 312. If it is determined that the instruction is a stop instruction, the control proceeds to step 310. The process proceeds to 314.
  • step 310 the power storage unit 102 starts charging the storage battery by PCS. Control then proceeds to step 316.
  • step 312 the power storage unit 102 starts discharging the storage battery by PCS. Control then proceeds to step 316.
  • step 314 the power storage unit 102 stops the PCS. Control then proceeds to step 316.
  • step 316 the power storage unit 102 determines whether or not an end instruction has been received. If it is determined that an end instruction has been received, the program ends. Otherwise, control returns to step 300 and the processing from step 300 to step 316 is repeated.
  • the termination instruction is issued, for example, by transmitting a stop instruction from the remote control 106 to the power storage unit 102. Even if the program is terminated once, it is preferable that the program is started again if the power system 130 recovers from the power failure.
  • the control unit of the expansion unit 104 reads a predetermined program from the storage unit inside the expansion unit 104 and executes it.
  • the flowchart of FIG. 6 is obtained by adding steps 400 and 402 to the flowchart of FIG. 6 is different from FIG. 5 in that the operation subject is changed from the power storage unit 102 to the extension unit 104, and the processing target is the second bypass switch 114 and the PCS in the extension unit 104.
  • the processing of the steps given the same numbers as in FIG. 5 is the same as the processing of FIG. 5, so that the overlapping description will not be repeated and the differences will be mainly described.
  • the extension unit 104 determines whether or not data has been received, similarly to the power storage unit 102 (step 300). If it is determined that the data has been received, in step 400, the extension unit 104 receives the SOC transmission request. Determine whether or not. Specifically, the extension unit 104 determines whether or not the data received in step 300 is the SOC request code transmitted from the extension unit 104 in step 204 (see FIG. 4). If it is determined that the SOC request code has been received, control proceeds to step 402. Otherwise control passes to step 302.
  • step 402 the extension unit 104 detects the current storage amount (SOC) of the storage battery in the extension unit 104 and transmits the value to the remote controller 106. Thereafter, control proceeds to step 302.
  • SOC current storage amount
  • the extension unit 104 repeats the processing from step 300 to step 316, step 400, and step 402 until an end instruction is received, similarly to the power storage unit 102.
  • the extension unit 104 turns on the second bypass switch 114 in step 304 and turns off the second bypass switch 114 in step 306.
  • step 310 the expansion unit 104 starts charging by the PCS in the expansion unit 104, in step 312, the discharging starts by the PCS in the expansion unit 104, and in step 314, the PCS in the expansion unit 104 is stopped. .
  • step 316 when the extension unit 104 receives the stop instruction transmitted from the remote controller 106 to the extension unit 104, the program ends. Even if the program is terminated once, it is preferable that the program is started again if the power system 130 recovers from the power failure.
  • control unit inside the power generation device 120 reads and executes a predetermined program from the storage unit inside the power generation device 120.
  • step 500 the power generator 120 determines whether or not a power failure has occurred in the power system 130. Specifically, the power generation apparatus 120 determines whether or not a power failure has occurred in the power system 130 based on information (voltage value) from the second sensor 132. For example, if the voltage is equal to or less than a predetermined value (value close to zero), it can be determined that a power failure occurs. If it is determined that there is a power failure, control proceeds to step 502. Otherwise, step 500 is repeated.
  • a predetermined value value close to zero
  • step 502 the power generator 120 starts a self-sustaining operation. Specifically, as described above, the power generation device 120 opens a connection to a distribution line for supplying power to the second sensor 132 and starts outputting power from the self-supporting output terminal 122. Thereafter, control proceeds to step 504.
  • step 504 the power generation device 120 transmits the self-sustained output information indicating the amount of power supplied from the self-sustained output terminal 122 to the remote controller 106. Thereafter, control proceeds to step 506.
  • the power generator 120 determines whether or not to end. For example, it is determined that the power generation apparatus 120 is finished when the power failure of the power system 130 is resolved and the supply of power from the power system 130 is started. When it determines with complete
  • the remote controller 106 sets the switching unit 108 to the state at the time of the power failure, disconnects the specific load 124 from the power system 130, and transmits the SOC (storage amount) to the extension unit 104. Request (step 204 in FIG. 4). As a result, the specific load 124 enters a connected state in which power can be supplied from the self-sustained output terminal 122, the power storage unit 102, and the extension unit 104 of the power generation device 120.
  • the power generator 120 starts a self-sustained operation and transmits self-sustained output information (the amount of output power from the self-sustained output terminal 122) to the remote control 106 (steps 502 and 504 in FIG. 7).
  • the extension unit 104 receives the SOC request code, the extension unit 104 transmits the SOC to the remote controller 106 (step 402 in FIG. 6). Whether the remote controller 106 supplies power to the specific load 124 from the power generation device 120, the power storage unit 102, or the expansion unit 104 according to the independent output power supplied by the self-sustained operation of the power generation device 120 and the SOC of the expansion unit 104. To decide.
  • the remote controller 106 transmits an instruction according to the determination to the power storage unit 102 and the extension unit 104 (see step 208 to step 224 in FIG. 4).
  • the power storage unit 102 sets the first bypass switch 112 according to the instruction received from the remote controller 106, and starts charging / discharging by the PCS or stops the PCS (step 302 to step 314 in FIG. 5).
  • the extension unit 104 sets the second bypass switch 114 according to the instruction received from the remote controller 106, and starts charging / discharging by the PCS or stops the PCS (from step 302 to step 314 in FIG. 6). .
  • electric power can be supplied to the specific load 124 from any of the power generation device 120, the power storage unit 102, and the extension unit 104.
  • 8 to FIG. 11 how the power is supplied to the specific load 124 according to the self-sustained output power and the storage amount (SOC) of the extension unit 104 will be specifically described.
  • 8 to 11 show only elements related to a change in power supplied to the specific load 124 during a power failure in the configuration shown in FIG. 4. Dashed arrows represent current.
  • the storage batteries of the power storage unit 102 and the extension unit 104 are charged (not limited to full charge) at normal times.
  • the case where the battery is charged) is shown.
  • the determination result of step 208 in FIG. 4 is NO, and step 218 is executed.
  • the determination result of step 220 is YES, and step 222 is executed. Therefore, an instruction including data (1, 0) (bypass parameter is “1” (bypass output) and charge / discharge parameter is “0” (stop PCS)) is transmitted to power storage unit 102.
  • an instruction including data (1, ⁇ 1) (bypass parameter is “1” (bypass output) and charge / discharge parameter is “ ⁇ 1” (charge)) is transmitted to the extension unit 104.
  • the PCS of the power storage unit 102 is stopped, the first bypass switch 112 is turned on, and the input power is bypassed and output to the extension unit 104.
  • the extension unit 104 bypasses the input power and outputs it to the specific load 124 to charge the surplus power to the internal storage battery.
  • the determination result of step 208 in FIG. 4 is NO, and step 218 is executed.
  • the determination result of step 220 is NO, and step 224 is executed. Therefore, an instruction including data (1, 0) is transmitted to the power storage unit 102 as in the case of FIG. Unlike the case of FIG.
  • the extension unit 104 is instructed to include (0, 1) data (bypass parameter is “0” (no bypass output) and charge / discharge parameter is “1” (discharge)). Sent. As a result, as shown in FIG. 9, the PCS of the power storage unit 102 is stopped, and the state where the first bypass switch 112 is turned on (bypass output) is maintained. The extension unit 104 turns off the second bypass switch 114 (does not perform bypass output), discharges the internal storage battery, and supplies power to the specific load 124.
  • step 208 in FIG. 4 the determination result of step 208 in FIG. 4 is YES, and step 210 is executed. Moreover, the determination result of step 212 is YES, and step 214 is executed. Therefore, an instruction including data (1, 0) (bypass parameter is “1” (bypass output) and charge / discharge parameter is “0” (stop PCS)) is transmitted to the extension unit 104.
  • An instruction including (1, ⁇ 1) data (bypass parameter is “1” (bypass output) and charge / discharge parameter is “ ⁇ 1” (charge)) is transmitted to power storage unit 102.
  • the power storage unit 102 turns on the first bypass switch 112 (bypasses the output), bypasses the power consumed by the specific load 124 out of the input power, and the extension unit 104 The surplus power is charged to the internal storage battery.
  • the expansion unit 104 stops the PCS, turns on the second bypass switch 114 (bypasses output), bypasses the input power, and outputs it to the specific load 124.
  • the determination result of step 208 in FIG. 4 is YES, and step 210 is executed. Further, the determination result of step 212 is NO, and step 216 is executed. Therefore, an instruction including data (1, 0) is transmitted to the extension unit 104 as in the case of FIG. Unlike the case of FIG.
  • an instruction including data (0, 1) (bypass parameter is “0” (no bypass output) and charge / discharge parameter is “1” (discharge)) is transmitted to the power storage unit 102.
  • the power storage unit 102 turns off the first bypass switch 112 (does not perform bypass output), discharges the internal storage battery, and outputs power to the extension unit 104.
  • the extension unit 104 stops the PCS, maintains the state in which the second bypass switch 114 is turned on (bypass output), bypasses the input power, and outputs it to the specific load 124.
  • the unit (extension unit 104) connected at a position closer to the specific load 124 is charged / discharged.
  • the remaining unit (power storage unit 102) is charged / discharged.
  • the expansion unit 104 connected at a position closer to the specific load 124 (that is, a position farther from the power generation device 120) is first charged / discharged.
  • the present invention is not limited to this.
  • the power storage unit 102 and the extension unit are supplied by surplus power of the power generation apparatus 120 while supplying power to the specific load 124. 104 may be charged.
  • the ratio of the electric power for charging the power storage unit 102 and the extension unit 104 is equal in consideration of the state of each of the power storage unit 102 and the extension unit 104, that is, at least one of the SOC and the deterioration degree.
  • Control may be performed as follows.
  • the degree of deterioration is an index representing the deterioration state of the battery, for example, SOH (State Of Health).
  • SOH is expressed as a ratio (%) of the storage capacity (Ah) at a certain point in time (deterioration) to the initial full charge capacity (Ah).
  • the first bypass switch 112 of the power storage unit 102 is turned off. Then, power is supplied to the specific load 124 from either the power storage unit 102 or the extension unit 104 connected in series.
  • the second bypass switch 114 of the extension unit 104 is turned on, and the specific load 124 from the storage battery of the power storage unit 102 connected at a position farther from the specific load 124 (that is, a position closer to the power generator 120). To supply power.
  • control is performed so that power is supplied from the power storage unit 102 or the extension unit 104 to the specific load 124. At that time, since the power storage unit 102 and the extension unit 104 are connected in series, power can be supplied to the specific load 124 for a longer time than when connected in parallel.
  • extension unit 104 As the power storage unit 102, it is easy to add the same product (extension unit 104) as the power storage unit 102. It can correspond to.
  • the remote controller 106 may operate in the same manner as when two power storage units are connected in series. . That is, the remote controller 106 may generate an instruction regarding the setting of the internal bypass switch and the operation of the PCS for each power storage unit in accordance with the output power of the independent output terminal 122. Thereby, the power source supplied to the specific load 124 can be appropriately determined from among the plurality of power storage units and the power generation device 120.
  • the remote controller 106 sets the internal bypass switch for each power storage unit according to the power consumption of the specific load 124 obtained from the detection value of the first sensor 110 and the output power of the independent output terminal 122. And instructions regarding the operation of the PCS may be generated. Thereby, the electric power source supplied to the specific load 124 can be determined more appropriately from the plurality of power storage units and the power generation device.
  • the remote controller 106 generates an instruction regarding the setting of the internal bypass switch and the operation of the PCS for the power storage unit according to at least one of the power storage amount and the degree of deterioration (SOH) of the storage battery of each power storage unit. Also good.
  • the power source to be supplied to the specific load 124 can be appropriately determined from among the plurality of power storage units and the power generation device, and the power storage amount becomes zero when power is supplied from the storage battery of one power storage unit. Electric power can be supplied from a storage battery of another power storage unit.
  • the present invention is not limited to this. It suffices if the setting of the respective bypass switches and the operation of the PCS can be designated for each unit (the power storage unit 102 and the extension unit 104).
  • the remote control and each unit store possible combinations of bypass switch settings and PCS operations in a table format, and information (for example, numbers) specifying one combination is transmitted from the remote control to each unit. May be.
  • Each unit can search the table by number to identify bypass switch settings and PCS operations.
  • the remote control 106 may receive information indicating the occurrence of a power failure from an external device (for example, the power generation device 120).
  • the present invention is not limited to this.
  • the power storage unit 102 and the extension unit 104 have current sensors therein, and can measure the output power of each unit. Therefore, in FIG. 3, the first sensor 110 may not be provided. In that case, the remote controller 106 does not need to execute the process of step 200 in the flowchart of FIG.
  • the remote controller 106 measures the output current of each unit with an internal current sensor for each of the power storage unit 102 and the extension unit 104, and compares the output power calculated from the measured value with the maximum output power of each unit. Depending on the comparison result, the remote controller 106 can determine whether to supply power from each of the power storage unit 102 and the extension unit 104.
  • the remote controller 106 may execute the flowchart of FIG.
  • the flowchart of FIG. 13 is the same as the flowchart of FIG. 4 except that step 200 is deleted, steps 212, 216, 220, and 224 are replaced with steps 242, 244, 248, and 250, respectively, and steps 240 and 246 are added. is there.
  • steps 240 and 246 are added. is there.
  • the processing of the step given the same number as in FIG. 4 is the same as that in FIG. 4. Therefore, the overlapping description will not be repeated, and different points will be mainly described.
  • step 242 the remote controller 106 requests the power storage unit 102 to transmit the output power of the power storage unit 102 (calculated value from the output current value measured by the internal current sensor).
  • the remote control 106 determines whether or not the acquired value (output power of the power storage unit 102) is less than the maximum independent output value. If the output power of power storage unit 102 is less than the maximum self-sustained output value, control proceeds to step 214; otherwise, control proceeds to step 244.
  • This maximum self-sustained output value is the maximum power that can be output by the power generation device 120 at the present time, that is, the self-supported output power acquired in step 206 (the amount of power supplied from the self-sustained output terminal 122 transmitted from the power generation device 120) Self-supporting output information).
  • step 214 the same processing as in FIG. 4 is executed.
  • remote control 106 transmits an instruction to power storage unit 102 to bypass and discharge.
  • step 218 the remote control 106 bypasses the input power to the power storage unit 102 and transmits an instruction to stop the PCS. To do. Thereafter, in step 246, the remote controller 106 transmits an instruction to the extension unit 104 so as to bypass the input power.
  • step 248 the remote controller 106 requests the extension unit 104 to transmit the output power of the extension unit 104 (calculated value from the output current value measured by the internal current sensor).
  • the remote controller 106 determines whether or not the acquired value (output power of the extension unit 104) is less than the maximum independent output value. If the output power of the extension unit 104 is less than the maximum self-sustained output value, control proceeds to step 222; otherwise, control proceeds to step 250.
  • This self-sustained output maximum value means the maximum value of power that can be output by the extension unit 104 itself. Both the power storage unit 102 and the extension unit 104 are instructed to bypass (steps 218 and 246), and the bypass switch is turned on.
  • the output power of the extension unit 104 calculated from the measured value of the current sensor inside the extension unit 104 includes the output power from the power generation device 120 and the power storage unit 102 in addition to the output power of the extension unit 104 itself. Can be. However, here, the output power from the power storage unit 102 is 0 in step 218.
  • step 222 as described above, the same processing as in FIG. 4 is executed.
  • step 250 the remote control 106 transmits an instruction to the extension unit 104 and the power storage unit 102 to discharge.
  • the shortage can be supplied by discharging the power storage unit 102 (step 250).
  • the maximum output power (independent output maximum value) of the extension unit 104 is 1500 W
  • the shortage (100 W) can be supplied from the power storage unit 102 when the output power (measured value) of the extension unit 104 exceeds 1600 W. .
  • the maximum power that can be output by the expansion unit 104 itself may be stored in advance in the storage unit inside the remote controller 106.
  • the maximum value of the power that can be output by the power storage unit 102 itself may be used as the maximum independent output value.
  • the output power of the power storage unit 102 power consumption at the specific load 124 exceeds the maximum self-sustained output value of the power storage unit 102 itself, the shortage is removed from the power generator 120. What is necessary is just to supply.
  • the remote controller 106 does not have to acquire the independent output power (independent output information transmitted from the power generation device 120).
  • the remote controller 106 mainly controls the power storage unit 102 and the extension unit 104 .
  • the present invention is not limited to this. Similar control may be performed mainly by at least one of the power storage unit 102 and the extension unit 104.
  • the power storage unit 102 is the main body and performs the same control as the remote controller 106.
  • the power storage system 150 for independent operation according to the third modification can be configured as shown in FIG.
  • the self-sustaining operation power storage system 150 is obtained by deleting the remote controller 106 from the self-sustained operation power storage system 100 of FIG.
  • the self-sustained operation power storage system 150 further includes a communication path 160 that connects the PCS 152 of the power storage unit 102 and the PCS 154 of the extension unit 104 so that they can communicate with each other, and the PCS 152 of the power storage unit 102 for acquiring information and controlling each device. Lines 162-168.
  • the communication path 160 may be wired communication or wireless communication.
  • the PCS 152 of the power storage unit 102 executes the same processing as the flowchart shown in FIG. 4 in addition to the processing shown in the flowchart shown in FIG.
  • the PCS 154 of the extension unit 104 executes the same processing as the flowchart shown in FIG.
  • the power generation device 120 executes the same processing as the flowchart shown in FIG. Therefore, the steps of FIGS. 4 to 7 are referred to as appropriate.
  • the PCS 152 obtains the power supplied to the specific load 124 from information (current value) input from the first sensor 110 via the specific load power detection line 162 (see step 200 in FIG. 4). Subsequently, the PCS 152 determines whether or not a power failure has occurred in the power system 130 based on information (voltage value) input from the second sensor 132 via the power failure detection line 164 (see step 202 in FIG. 4). ).
  • the PCS 152 outputs an instruction to the switching unit 108 via the switching unit control line 166 to set the switching unit 108 to a setting at the time of a power failure (the input terminal 140 and the output terminal 144 are connected). Further, the PCS 152 transmits an SOC request code for requesting transmission of the SOC of the storage battery in the expansion unit 104 to the expansion unit 104 via the communication path 160 (see step 204 in FIG. 4). In response to this, the PCS 154 of the extension unit 104 detects the current SOC of the storage battery inside the extension unit 104 and transmits the value to the PCS 152 via the communication path 160 (see step 402 in FIG. 6).
  • the PCS 152 determines whether or not the independent output power is equal to or higher than the power of the specific load 124 (see step 212). If the self-sustained output power is greater than or equal to the specific load power, the PCS 152 bypasses the power input to the power storage unit 102 and controls the power storage unit 102 to charge (see step 214 in FIG. 4). That is, the PCS 152 turns on the first bypass switch 112 (see step 304 in FIG. 5) and starts charging the storage battery (see step 310 in FIG. 5).
  • the PCS 152 controls the power storage unit 102 so that the power input to the power storage unit 102 is not bypassed and discharged (see step 216 in FIG. 4). . That is, the PCS 152 turns off the first bypass switch 112 (see step 306 in FIG. 5), and starts discharging the storage battery (see step 312 in FIG. 5).
  • the PCS 152 bypasses the power input to the power storage unit 102 and controls the power storage unit 102 to stop the charge / discharge control function (see step 218 in FIG. 4). That is, the PCS 152 turns on the first bypass switch 112 (see step 304 in FIG. 5), and stops the function of controlling charge / discharge of the storage battery of the power storage unit 102 (see step 314 in FIG. 5). Subsequently, the PCS 152 determines whether or not the independent output power is equal to or higher than the power of the specific load 124 (see step 220 in FIG. 4).
  • the PCS 152 bypasses the power input to the extension unit 104 and transmits an instruction to the extension unit 104 via the communication path 160 so as to be charged ( (See step 222 in FIG. 4). If the self-sustained output power is less than the specific load power, the PCS 152 transmits an instruction to the extension unit 104 via the communication path 160 so that the power input to the extension unit 104 is not bypassed and discharged. (See step 224 in FIG. 4). In response to this, the PCS 154 of the extension unit 104 executes processing according to the instruction (see step 302 to step 314 in FIG. 6).
  • the self-sustaining operation power storage system 150 operates in the same manner as the self-sustained operation power storage system 100 (FIG. 3). That is, when a power failure occurs in the power system 130, the PCS 152 sets the switching unit 108 to the state at the time of the power failure, disconnects the specific load 124 from the power system 130, and requests the extension unit 104 to transmit SOC (amount of storage). (See step 204 in FIG. 4). As a result, the specific load 124 enters a connected state in which power can be supplied from the self-sustained output terminal 122, the power storage unit 102, and the extension unit 104 of the power generation device 120.
  • the power generator 120 When a power failure occurs in the power system 130, the power generator 120 starts a self-sustained operation and transmits self-sustained output information to the PCS 152 (see step 502 and step 504 in FIG. 7).
  • the expansion unit 104 receives the SOC request code, it transmits the SOC to the PCS 152 (see step 402 in FIG. 6).
  • the PCS 152 determines which of the power generation device 120, the power storage unit 102, and the expansion unit 104 supplies power to the specific load 124 according to the self-sustained output power supplied by the self-sustaining operation of the power generation device 120 and the SOC of the expansion unit 104. decide.
  • the PCS 152 sets the power storage unit 102 and transmits an instruction to the extension unit 104 (see step 208 to step 224 in FIG. 4). That is, the PCS 152 sets the first bypass switch 112 according to the determination, and starts charging / discharging or stops the charging / discharging control function (see step 302 to step 314 in FIG. 5). Similarly, the extension unit 104 sets the second bypass switch 114 according to the instruction received from the PCS 152 and starts charging / discharging by the PCS 154 or stops the charging / discharging control function of the PCS 154 (FIG. 6). Step 302 to Step 314). Thereby, at the time of a power failure, electric power can be supplied to the specific load 124 from any of the power generation device 120, the power storage unit 102, and the extension unit 104.
  • the PCS 152 of the power storage unit 102 can assume the function of the remote controller 106.
  • the extension unit 104 may be a main body and control similar to the above may be performed. That is, a case where the power storage unit 102 includes a remote controller or a case where the extension unit 104 includes a remote controller is conceivable.
  • bypass switch (112, 114) is disposed only between the input terminal and the PCS in each power storage unit (102, 104), and the PCS and the output terminal are directly connected without a switch.
  • a switch may be provided between the PCS and the output terminal.
  • a switch may be provided before and after the PCS to control a total of two switches.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

La présente invention fait appel à une pluralité d'unités d'accumulation d'électricité et à une unité de commande. Chaque unité d'accumulation d'électricité comprend : une batterie d'accumulateurs ; une borne d'entrée, une borne de sortie et un commutateur qui ouvre ou ferme le circuit entre la borne d'entrée et la borne de sortie. Le commutateur et la charge/décharge de la batterie d'accumulateurs sont commandés conformément à des instructions provenant de l'unité de commande. Les unités de la pluralité d'unités d'accumulation d'électricité sont connectées en série par une connexion de la borne d'entrée de chaque unité d'accumulation d'électricité à une borne de sortie d'une unité de la pluralité d'unités d'accumulation d'électricité qui n'est pas l'unité de d'accumulation d'électricité en question. La borne d'entrée qui n'est pas connectée à une borne quelconque des bornes de sortie est connectée à la borne de sortie autonome du dispositif de production de puissance qui fonctionne de manière autonome en cas de panne de courant et délivre la puissance ainsi produite, la borne de sortie qui n'est pas connectée à une borne quelconque des bornes d'entrée est connectée à une charge spécifique à laquelle de la puissance doit être fournie en cas de panne de courant, et l'unité de commande génère des instructions pour chacune des unités d'accumulation d'électricité en cas de panne de courant.
PCT/JP2019/020269 2018-06-06 2019-05-22 Système d'accumulation d'électricité de pilotage autonome, unité d'accumulation d'électricité et procédé de commande WO2019235220A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020523612A JP7248023B2 (ja) 2018-06-06 2019-05-22 自立運転用蓄電システム、蓄電ユニット及び制御方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-108309 2018-06-06
JP2018108309 2018-06-06

Publications (1)

Publication Number Publication Date
WO2019235220A1 true WO2019235220A1 (fr) 2019-12-12

Family

ID=68770890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/020269 WO2019235220A1 (fr) 2018-06-06 2019-05-22 Système d'accumulation d'électricité de pilotage autonome, unité d'accumulation d'électricité et procédé de commande

Country Status (2)

Country Link
JP (1) JP7248023B2 (fr)
WO (1) WO2019235220A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021027784A (ja) * 2019-08-09 2021-02-22 住友電気工業株式会社 蓄電システム及びその制御方法
JP2022122238A (ja) * 2021-02-09 2022-08-22 メリー エレクトロニクス（シンセン）コンパニー リミテッド エネルギー貯蔵システム及びその電力供給方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012165365A1 (fr) * 2011-05-31 2012-12-06 パナソニック株式会社 Système d'alimentation électrique
JP2016073020A (ja) * 2014-09-26 2016-05-09 株式会社日立情報通信エンジニアリング 無停電電源装置及び無停電電源装置システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012165365A1 (fr) * 2011-05-31 2012-12-06 パナソニック株式会社 Système d'alimentation électrique
JP2016073020A (ja) * 2014-09-26 2016-05-09 株式会社日立情報通信エンジニアリング 無停電電源装置及び無停電電源装置システム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021027784A (ja) * 2019-08-09 2021-02-22 住友電気工業株式会社 蓄電システム及びその制御方法
JP7314707B2 (ja) 2019-08-09 2023-07-26 住友電気工業株式会社 蓄電システム及びその制御方法
JP2022122238A (ja) * 2021-02-09 2022-08-22 メリー エレクトロニクス（シンセン）コンパニー リミテッド エネルギー貯蔵システム及びその電力供給方法
JP7266647B2 (ja) 2021-02-09 2023-04-28 メリー エレクトロニクス（シンセン）コンパニー リミテッド エネルギー貯蔵システム及びその電力供給方法

Also Published As

Publication number Publication date
JP7248023B2 (ja) 2023-03-29
JPWO2019235220A1 (ja) 2021-06-24

Similar Documents

Publication Publication Date Title
JP5633478B2 (ja) 蓄電池
WO2012049965A1 (fr) Système de gestion d'énergie
US11791501B2 (en) Direct current power supplying system
US11305667B2 (en) Vehicle and power control system
CN103094953A (zh) 充放电控制方法、充电装置控制器及放电装置控制器
JP5410911B2 (ja) 蓄電池の劣化判別方法及び劣化判別装置、ならびに蓄電池の充電方法及び充電装置
KR101872809B1 (ko) 선박 및 해양플랜트의 배터리 연계형 고효율 전력관리시스템 및 방법
JP2015106962A (ja) 充放電制御装置及び充放電システム
WO2019235220A1 (fr) Système d'accumulation d'électricité de pilotage autonome, unité d'accumulation d'électricité et procédé de commande
EP3309922B1 (fr) Système de stockage d'énergie, dispositif de stockage d'énergie, et procédé de fonctionnement de dispositif de stockage d'énergie
WO2011051765A1 (fr) Dispositif d'optimisation de source d'énergie pour un système d'alimentation électrique
EP3708414A1 (fr) Dispositif de commande de puissance
WO2014083788A1 (fr) Convertisseur bidirectionnel
WO2019155507A1 (fr) Système d'alimentation électrique en c.c.
JP5507946B2 (ja) バッテリ制御ユニット
JP7185750B2 (ja) 充放電装置、充放電システムおよび充放電制御方法
WO2019163008A1 (fr) Système d'alimentation cc
JP4164975B2 (ja) 給電システム
WO2021044653A1 (fr) Appareil de conversion de puissance et système d'interconnexion de systèmes
WO2012049973A1 (fr) Système de gestion d'énergie
WO2021038762A1 (fr) Dispositif de commande de charge/décharge, système stockage d'électricité, et procédé de commande de charge/décharge
KR20210044485A (ko) 차량용 배터리 충전 관리 장치 및 그 방법
WO2019102565A1 (fr) Système d'alimentation électrique en courant continu
JP7310427B2 (ja) 蓄電システム及びその制御方法
US20230291222A1 (en) Power management device, power feeding system and power management method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19815935

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020523612

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19815935

Country of ref document: EP

Kind code of ref document: A1